一、尘埃吸附有害气体，悬浮于空气中，日久天长沉积在画面上，就会侵蚀画面。一般说，城市环境一周除一次尘，乡村环境一月除一次尘。除尘办法：可用电吹风的凉风与画面成30度角，坚持10--15厘米的间隔从右到左扫一遍，或者用鸡毛掸悄悄扫一下画面。

1、 Dust adsorbs harmful gases, suspends in the air, and over time deposits on the image, which can erode it. Generally speaking, urban environments are dusted once a week, and rural environments are dusted once a month. Dust removal method: Use the cool breeze of an electric hair dryer to form a 30 degree angle with the image, and sweep it from right to left at intervals of 10-15 centimeters, or use a feather duster to quietly sweep the image.

二、光是对名人字画影响大的自然要素，特别是紫外光，它可使画面颜料蜕变、分解，导致纸质改变。紫外光首要来自太阳光，白炽灯泡和荧光灯管宣布的光也有少数紫外光。因此，在挂画时，不能靠近窗户，避免太阳光直接照射画面。灯泡或日光灯宣布的光，虽说影响不大，但长时间近间隔照射也能使名人字画纸质变黄。

2、 Light is a natural element that has a significant impact on celebrity calligraphy and painting, especially ultraviolet light, which can cause the paint on the screen to transform and decompose, leading to changes in the paper. Ultraviolet light mainly comes from sunlight, and there is also a small amount of ultraviolet light announced by incandescent bulbs and fluorescent tubes. Therefore, when hanging pictures, do not approach the window to avoid direct sunlight on the screen. The light announced by a light bulb or fluorescent lamp may not have a significant impact, but prolonged close exposure can also cause the paper of celebrity calligraphy and painting to turn yellow.

三、蠹鱼，也称衣鱼、纸鱼，是无翅昆虫，一般蛀食书画外表，特别损害糨糊粘贴处。烟草甲的幼虫对书画损害非常大，喜欢在书画中打洞，而自身藏于洞内。一般书画防虫多用驱避剂，常用的药物如卫生球、樟脑丸、对二氯化苯，这种药品都是白色固体，易于挥发。

3、 The wormhead, also known as the clothes fish or paper fish, is a wingless insect that generally eats the surface of calligraphy and painting, especially damaging the paste sticking area. The larvae of tobacco beetles cause great damage to calligraphy and painting, and they like to make holes in calligraphy and painting, while hiding themselves inside the holes. Generally, insect repellents are commonly used for painting and calligraphy. Common drugs such as sanitary balls, Mothball, and p-dichlorobenzene are white solids that are easy to volatilize.

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